Louisville, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.1 °C (low) to 23.5 °C (high). Annual precipitation averages 1463.8 Millimeters. Louisville is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.9 °C | 12.6 °C | 123.7 mm |
| February | 2.6 °C | 15.1 °C | 141.73 mm |
| March | 6.3 °C | 19.7 °C | 141.48 mm |
| April | 10.4 °C | 23.8 °C | 141.48 mm |
| May | 15.4 °C | 27.7 °C | 117.09 mm |
| June | 19.6 °C | 31.3 °C | 107.95 mm |
| July | 21.3 °C | 32.7 °C | 125.98 mm |
| August | 20.8 °C | 32.4 °C | 117.35 mm |
| September | 17.5 °C | 29.9 °C | 102.11 mm |
| October | 11.3 °C | 24.4 °C | 95 mm |
| November | 5.3 °C | 18.3 °C | 107.7 mm |
| December | 2.3 °C | 13.7 °C | 142.24 mm |
| Annual | 11.1 °C | 23.5 °C | 1463.81 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |